f2fs: fix wrong continue condition in GC

We should decrease the frozen counter.

Cc: stable@vger.kernel.org
Fixes: 325163e9 ("f2fs: add gc_urgent_high_remaining sysfs node")
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/gc.c

@@ -97,14 +97,10 @@ static int gc_thread_func(void *data)
 		 */
 		if (sbi->gc_mode == GC_URGENT_HIGH) {
 			spin_lock(&sbi->gc_urgent_high_lock);
-			if (sbi->gc_urgent_high_limited) {
-				if (!sbi->gc_urgent_high_remaining) {
-					sbi->gc_urgent_high_limited = false;
-					spin_unlock(&sbi->gc_urgent_high_lock);
-					sbi->gc_mode = GC_NORMAL;
-					continue;
-				}
-				sbi->gc_urgent_high_remaining--;
+			if (sbi->gc_urgent_high_limited &&
+					!sbi->gc_urgent_high_remaining--) {
+				sbi->gc_urgent_high_limited = false;
+				sbi->gc_mode = GC_NORMAL;
 			}
 			spin_unlock(&sbi->gc_urgent_high_lock);
 		}