IB/usnic: Fix incorrect cast in usnic_ib_fw_string_to_u64

Signed-off-by: Christian Benvenuti <benve@cisco.com>
Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: Dave Goodell <dgoodell@cisco.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/usnic/usnic_ib_verbs.c

@@ -51,7 +51,7 @@
 
 static void usnic_ib_fw_string_to_u64(char *fw_ver_str, u64 *fw_ver)
 {
-	*fw_ver = (u64) *fw_ver_str;
+	*fw_ver = *((u64 *)fw_ver_str);
 }
 
 static int usnic_ib_fill_create_qp_resp(struct usnic_ib_qp_grp *qp_grp,