afs: remove redundant assignment of dvnode to itself

The assignment of dvnode to itself is redundant and can be removed.
Cleans up warning detected by cppcheck:

fs/afs/dir.c:975: (warning) Redundant assignment of 'dvnode' to itself.

Fixes: d2ddc77 ("afs: Overhaul volume and server record caching and fileserver rotation")
Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: David Howells <[email protected]>

Author: Colin Ian King

fs/afs/dir.c

@@ -974,7 +974,7 @@ static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 	struct afs_fs_cursor fc;
 	struct afs_file_status newstatus;
 	struct afs_callback newcb;
-	struct afs_vnode *dvnode = dvnode = AFS_FS_I(dir);
+	struct afs_vnode *dvnode = AFS_FS_I(dir);
 	struct afs_fid newfid;
 	struct key *key;
 	int ret;