ksmbd: make smb2_find_context_vals return NULL if not found

instead of -ENOENT, make smb2_find_context_vals
return NULL if the given context cannot be found.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
diff --git a/fs/ksmbd/oplock.c b/fs/ksmbd/oplock.c
index 7106356..8e53815 100644
--- a/fs/ksmbd/oplock.c
+++ b/fs/ksmbd/oplock.c
@@ -1472,7 +1472,7 @@ struct create_context *smb2_find_context_vals(void *open_req, const char *tag)
 		next = le32_to_cpu(cc->Next);
 	} while (next != 0);
 
-	return ERR_PTR(-ENOENT);
+	return NULL;
 }
 
 /**