cifs: fix return of uninitialized rc in dfs_cache_update_tgthint()

Fix this by initializing rc to 0 as cache_refresh_path() would not set
it in case of success.

Reported-by: kernel test robot <[email protected]>
Link: https://lore.kernel.org/all/[email protected]/
Signed-off-by: Paulo Alcantara (SUSE) <[email protected]>
Signed-off-by: Steve French <[email protected]>

Author: Paulo Alcantara

fs/cifs/dfs_cache.c

@@ -1047,10 +1047,10 @@ int dfs_cache_update_tgthint(const unsigned int xid, struct cifs_ses *ses,
 			     const struct nls_table *cp, int remap, const char *path,
 			     const struct dfs_cache_tgt_iterator *it)
 {
-	int rc;
-	const char *npath;
-	struct cache_entry *ce;
 	struct cache_dfs_tgt *t;
+	struct cache_entry *ce;
+	const char *npath;
+	int rc = 0;
 
 	npath = dfs_cache_canonical_path(path, cp, remap);
 	if (IS_ERR(npath))