fs/ntfs3: Make ntfs_update_mftmirr return void

None of callers check the return value of ntfs_update_mftmirr(), so make
it return void to make code simpler.
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

fs/ntfs3/fsntfs.c

@@ -827,7 +827,7 @@ int ntfs_refresh_zone(struct ntfs_sb_info *sbi)
 /*
  * ntfs_update_mftmirr - Update $MFTMirr data.
  */
-int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait)
+void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait)
 {
 	int err;
 	struct super_block *sb = sbi->sb;
@@ -836,12 +836,12 @@ int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait)
 	u32 bytes;
 
 	if (!sb)
-		return -EINVAL;
+		return;
 
 	blocksize = sb->s_blocksize;
 
 	if (!(sbi->flags & NTFS_FLAGS_MFTMIRR))
-		return 0;
+		return;
 
 	err = 0;
 	bytes = sbi->mft.recs_mirr << sbi->record_bits;
@@ -852,16 +852,13 @@ int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait)
 		struct buffer_head *bh1, *bh2;
 
 		bh1 = sb_bread(sb, block1++);
-		if (!bh1) {
-			err = -EIO;
-			goto out;
-		}
+		if (!bh1)
+			return;
 
 		bh2 = sb_getblk(sb, block2++);
 		if (!bh2) {
 			put_bh(bh1);
-			err = -EIO;
-			goto out;
+			return;
 		}
 
 		if (buffer_locked(bh2))
@@ -881,13 +878,10 @@ int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait)
 
 		put_bh(bh2);
 		if (err)
-			goto out;
+			return;
 	}
 
 	sbi->flags &= ~NTFS_FLAGS_MFTMIRR;
-
-out:
-	return err;
 }
 
 /*

fs/ntfs3/ntfs_fs.h

@@ -593,7 +593,7 @@ int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft,
 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno);
 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to);
 int ntfs_refresh_zone(struct ntfs_sb_info *sbi);
-int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait);
+void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait);
 enum NTFS_DIRTY_FLAGS {
 	NTFS_DIRTY_CLEAR = 0,
 	NTFS_DIRTY_DIRTY = 1,