scsi: bnx2fc: Simplify code

Calling 'list_splice' followed by 'INIT_LIST_HEAD' is equivalent to
'list_splice_init'.

This has been spotted with the following coccinelle script:
/////
@@
expression y,z;
@@

-   list_splice(y,z);
-   INIT_LIST_HEAD(y);
+   list_splice_init(y,z);
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: NChad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/bnx2fc/bnx2fc_fcoe.c

@@ -2765,8 +2765,7 @@ static void __exit bnx2fc_mod_exit(void)
 	 * held.
 	 */
 	mutex_lock(&bnx2fc_dev_lock);
-	list_splice(&adapter_list, &to_be_deleted);
-	INIT_LIST_HEAD(&adapter_list);
+	list_splice_init(&adapter_list, &to_be_deleted);
 	adapter_count = 0;
 	mutex_unlock(&bnx2fc_dev_lock);