IB/srp: Check ib_query_gid return value

Detected by Coverity.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 529b6bc..89032263 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -2649,7 +2649,9 @@
 	if (ret)
 		goto err_free_mem;
 
-	ib_query_gid(ibdev, host->port, 0, &target->path.sgid);
+	ret = ib_query_gid(ibdev, host->port, 0, &target->path.sgid);
+	if (ret)
+		goto err_free_mem;
 
 	shost_printk(KERN_DEBUG, target->scsi_host, PFX
 		     "new target: id_ext %016llx ioc_guid %016llx pkey %04x "