[ALSA] continue on IS_ERR from platform device registration

I previously only concerned myself with sound/isa. When I now checked
for more platform_device_register_simple() usages in ALSA I found a
couple more drivers that needed the same patches as already submitted
for all the ISA drivers.
This first one is the continue-on-iserr patch for sound/drivers. This
gets them all.

Signed-off-by: Rene Herman <rene.herman@keyaccess.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/drivers/dummy.c

@@ -675,25 +675,19 @@ static int __init alsa_card_dummy_init(void)
 			continue;
 		device = platform_device_register_simple(SND_DUMMY_DRIVER,
 							 i, NULL, 0);
-		if (IS_ERR(device)) {
-			err = PTR_ERR(device);
-			goto errout;
-		}
+		if (IS_ERR(device))
+			continue;
 		devices[i] = device;
 		cards++;
 	}
 	if (!cards) {
 #ifdef MODULE
 		printk(KERN_ERR "Dummy soundcard not found or device busy\n");
 #endif
-		err = -ENODEV;
-		goto errout;
+		snd_dummy_unregister_all();
+		return -ENODEV;
 	}
 	return 0;
-
- errout:
-	snd_dummy_unregister_all();
-	return err;
 }
 
 static void __exit alsa_card_dummy_exit(void)

sound/drivers/mpu401/mpu401.c

@@ -251,10 +251,8 @@ static int __init alsa_card_mpu401_init(void)
 #endif
 		device = platform_device_register_simple(SND_MPU401_DRIVER,
 							 i, NULL, 0);
-		if (IS_ERR(device)) {
-			err = PTR_ERR(device);
-			goto errout;
-		}
+		if (IS_ERR(device))
+			continue;
 		platform_devices[i] = device;
 		snd_mpu401_devices++;
 	}
@@ -266,14 +264,10 @@ static int __init alsa_card_mpu401_init(void)
 #ifdef MODULE
 		printk(KERN_ERR "MPU-401 device not found or device busy\n");
 #endif
-		err = -ENODEV;
-		goto errout;
+		snd_mpu401_unregister_all();
+		return -ENODEV;
 	}
 	return 0;
-
- errout:
-	snd_mpu401_unregister_all();
-	return err;
 }
 
 static void __exit alsa_card_mpu401_exit(void)

sound/drivers/serial-u16550.c

@@ -996,25 +996,19 @@ static int __init alsa_card_serial_init(void)
 			continue;
 		device = platform_device_register_simple(SND_SERIAL_DRIVER,
 							 i, NULL, 0);
-		if (IS_ERR(device)) {
-			err = PTR_ERR(device);
-			goto errout;
-		}
+		if (IS_ERR(device))
+			continue;
 		devices[i] = device;
 		cards++;
 	}
 	if (! cards) {
 #ifdef MODULE
 		printk(KERN_ERR "serial midi soundcard not found or device busy\n");
 #endif
-		err = -ENODEV;
-		goto errout;
+		snd_serial_unregister_all();
+		return -ENODEV;
 	}
 	return 0;
-
- errout:
-	snd_serial_unregister_all();
-	return err;
 }
 
 static void __exit alsa_card_serial_exit(void)

sound/drivers/virmidi.c

@@ -169,25 +169,19 @@ static int __init alsa_card_virmidi_init(void)
 			continue;
 		device = platform_device_register_simple(SND_VIRMIDI_DRIVER,
 							 i, NULL, 0);
-		if (IS_ERR(device)) {
-			err = PTR_ERR(device);
-			goto errout;
-		}
+		if (IS_ERR(device))
+			continue;
 		devices[i] = device;
 		cards++;
 	}
 	if (!cards) {
 #ifdef MODULE
 		printk(KERN_ERR "Card-VirMIDI soundcard not found or device busy\n");
 #endif
-		err = -ENODEV;
-		goto errout;
+		snd_virmidi_unregister_all();
+		return -ENODEV;
 	}
 	return 0;
-
- errout:
-	snd_virmidi_unregister_all();
-	return err;
 }
 
 static void __exit alsa_card_virmidi_exit(void)