ext4: fix wrong unit use in ext4_mb_new_blocks

Function ext4_free_blocks_simple needs count in cluster. Function
ext4_free_blocks accepts count in block. Convert count to cluster
to fix the mismatch.
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: stable@kernel.org
Reviewed-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Link: https://lore.kernel.org/r/20230603150327.3596033-12-shikemeng@huaweicloud.comSigned-off-by: Theodore Ts'o <tytso@mit.edu>

fs/ext4/mballoc.c

@@ -6373,7 +6373,7 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
 	}
 
 	if (sbi->s_mount_state & EXT4_FC_REPLAY) {
-		ext4_free_blocks_simple(inode, block, count);
+		ext4_free_blocks_simple(inode, block, EXT4_NUM_B2C(sbi, count));
 		return;
 	}