staging: greybus: timesync.c: Fixed WARNING for brace issue

Removed a checkpatch warning for braces on single argument if and else
statement.

Signed-off-by: Chase Metzger <[e-mail]>
Acked-by: Viresh Kumar <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/greybus/timesync.c

···
 		return -EINVAL;
 
 	mutex_lock(&timesync_svc->mutex);
-	if (timesync_svc->state !=  GB_TIMESYNC_STATE_INVALID) {
+	if (timesync_svc->state !=  GB_TIMESYNC_STATE_INVALID)
 		gb_timesync_set_state_atomic(timesync_svc, state);
-	} else {
+	else
 		ret = -ENODEV;
-	}
+
 	mutex_unlock(&timesync_svc->mutex);
 	return ret;
 }