f2fs: remove unneeded memset from init_once

Since, __GFP_ZERO is used while f2fs inode allocation, so we do not
need memset for f2fs_inode_info, as this is already zeroed out.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>

fs/f2fs/super.c

@@ -57,7 +57,6 @@ static void init_once(void *foo)
 {
 	struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
 
-	memset(fi, 0, sizeof(*fi));
 	inode_init_once(&fi->vfs_inode);
 }