PM / Hibernate: Replace unintuitive 'if' condition in kernel/power/user.c with 'else'

In the snapshot_ioctl() function, under SNAPSHOT_FREEZE, the code below
freeze_processes() is a bit unintuitive. Improve it by replacing the
second 'if' condition with an 'else' clause.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/kernel/power/user.c b/kernel/power/user.c
index c202e2e1..06ea33d 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -259,7 +259,7 @@
 		error = freeze_processes();
 		if (error)
 			usermodehelper_enable();
-		if (!error)
+		else
 			data->frozen = 1;
 		break;