f2fs: remove submit label in __submit_discard_cmd()

Complaint from Matthew Wilcox in another similar place:

	"submit?  You don't submit anything at the 'submit' label.
	it should be called 'skip' or something.  But I think this
	is just badly written and you don't need a goto at all."

Let's remove submit label for readability.
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/segment.c

@@ -1143,13 +1143,12 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
 		if (time_to_inject(sbi, FAULT_DISCARD)) {
 			f2fs_show_injection_info(sbi, FAULT_DISCARD);
 			err = -EIO;
-			goto submit;
-		}
+		} else {
 			err = __blkdev_issue_discard(bdev,
 					SECTOR_FROM_BLOCK(start),
 					SECTOR_FROM_BLOCK(len),
 					GFP_NOFS, &bio);
-submit:
+		}
 		if (err) {
 			spin_lock_irqsave(&dc->lock, flags);
 			if (dc->state == D_PARTIAL)