cifs: update cifs_ses::ip_addr after failover

cifs_ses::ip_addr wasn't being updated in cifs_session_setup() when
reconnecting SMB sessions thus returning wrong value in
/proc/fs/cifs/DebugData.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Cc: stable@kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/cifs/connect.c

@@ -4025,10 +4025,16 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 		   struct nls_table *nls_info)
 {
 	int rc = -ENOSYS;
+	struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr;
+	struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr;
 	bool is_binding = false;
 
-
 	spin_lock(&cifs_tcp_ses_lock);
+	if (server->dstaddr.ss_family == AF_INET6)
+		scnprintf(ses->ip_addr, sizeof(ses->ip_addr), "%pI6", &addr6->sin6_addr);
+	else
+		scnprintf(ses->ip_addr, sizeof(ses->ip_addr), "%pI4", &addr->sin_addr);
+
 	if (ses->ses_status != SES_GOOD &&
 	    ses->ses_status != SES_NEW &&
 	    ses->ses_status != SES_NEED_RECON) {