ACPICA: Hardware: back port of a recursive locking fix

This patch is a back port result of the following Linux commit:
 Commit: f7f71cf
 Author: Rakib Mullick <rakib.mullick@gmail.com>
 Subject: ACPI: Fix possible recursive locking in hwregs.c

As a result of different coding style rules, the back ported code generates
source code differences between the Linux kernel and the ACPICA upstream.
This patch reduces such source code differences.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/hwregs.c

@@ -278,8 +278,9 @@ acpi_status acpi_hw_clear_acpi_status(void)
 
 	acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags);
 
-	if (ACPI_FAILURE(status))
+	if (ACPI_FAILURE(status)) {
 		goto exit;
+	}
 
 	/* Clear the GPE Bits in all GPE registers in all GPE blocks */