cifs: potential unintitliazed error code in cifs_getattr()

Smatch complains that "rc" could be uninitialized.

    fs/cifs/inode.c:2206 cifs_getattr() error: uninitialized symbol 'rc'.

Changing it to "return 0;" improves readability as well.

Fixes: cc1baf98c8f6 ("cifs: do not ignore the SYNC flags in getattr")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>

fs/cifs/inode.c

@@ -2191,7 +2191,7 @@ int cifs_getattr(const struct path *path, struct kstat *stat,
 		if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
 			stat->gid = current_fsgid();
 	}
-	return rc;
+	return 0;
 }
 
 int cifs_fiemap(struct inode *inode, struct fiemap_extent_info *fei, u64 start,