cifs: remove initialization value

Don't initialize the rc as its value is being overwritten before its
use.

Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: Muhammad Usama Anjum

fs/cifs/smb2pdu.c

@@ -873,7 +873,7 @@ SMB2_negotiate(const unsigned int xid,
 	struct smb2_negotiate_rsp *rsp;
 	struct kvec iov[1];
 	struct kvec rsp_iov;
-	int rc = 0;
+	int rc;
 	int resp_buftype;
 	int blob_offset, blob_length;
 	char *security_blob;