scsi: fcoe: Memory leak fix in fcoe_sysfs_fcf_del()

In fcoe_sysfs_fcf_del(), we first deleted the fcf from the list and then
freed it if ctlr_dev was not NULL. This was causing a memory leak.

Free the fcf even if ctlr_dev is NULL.

Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Girish Basrur <[e-mail]>
Reviewed-by: Santosh Vernekar <[e-mail]>
Reviewed-by: Saurav Kashyap <[e-mail]>
Reviewed-by: Shyam Sundar <[e-mail]>
Signed-off-by: Javed Hasan <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/fcoe/fcoe_ctlr.c

···
 		WARN_ON(!fcf_dev);
 		new->fcf_dev = NULL;
 		fcoe_fcf_device_delete(fcf_dev);
-		kfree(new);
 		mutex_unlock(&cdev->lock);
 	}
+	kfree(new);
 }
 
 /**