[SCSI] fcoe: fix missing error check in call to fcoe_if_init

fcoe_if_init() can fail, but it's return value wasn't checked

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/fcoe/fcoe.c

@@ -1900,7 +1900,9 @@ static int __init fcoe_init(void)
 	/* Setup link change notification */
 	fcoe_dev_setup();
 
-	fcoe_if_init();
+	rc = fcoe_if_init();
+	if (rc)
+		goto out_free;
 
 	return 0;