cifs: cifs_convert_address() returns zero on error

The cifs_convert_address() returns zero on error but this caller is
testing for negative returns.

Btw. "i" is unsigned here, so it's never negative.

Reviewed-by: Jeff Layton <jlayton@samba.org>
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index c5807d3..dd9a4ae 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1067,7 +1067,7 @@
 			}
 			i = cifs_convert_address((struct sockaddr *)&vol->srcaddr,
 						 value, strlen(value));
-			if (i < 0) {
+			if (i == 0) {
 				printk(KERN_WARNING "CIFS:  Could not parse"
 				       " srcaddr: %s\n",
 				       value);