Input: pxa27x_keypad - remove an unneeded NULL check

Static checkers complain about this NULL check because we dereference it
without checking a couple lines later.  This function is only called
when "keypad->pdata" is non-NULL so we can just delete the NULL test.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
[Dmitry: remove the variable altogether given that it is used just once and
 dereference directly.]
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/keyboard/pxa27x_keypad.c

@@ -345,13 +345,11 @@ static int pxa27x_keypad_build_keycode(struct pxa27x_keypad *keypad)
 {
 	const struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
 	struct input_dev *input_dev = keypad->input_dev;
-	const struct matrix_keymap_data *keymap_data =
-				pdata ? pdata->matrix_keymap_data : NULL;
 	unsigned short keycode;
 	int i;
 	int error;
 
-	error = matrix_keypad_build_keymap(keymap_data, NULL,
+	error = matrix_keypad_build_keymap(pdata->matrix_keymap_data, NULL,
 					   pdata->matrix_key_rows,
 					   pdata->matrix_key_cols,
 					   keypad->keycodes, input_dev);