scsi: megaraid: Remove redundant code in megasas_alloc_cmds

megasas_alloc_cmds is to alloc cmd_list of instance instead of fusion,
and fusion is useless in this function. Just remove it.
Signed-off-by: NYisheng Xie <xieyisheng1@huawei.com>
Acked-by: NSumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/megaraid/megaraid_sas_base.c

@@ -4079,9 +4079,7 @@ int megasas_alloc_cmds(struct megasas_instance *instance)
 	int j;
 	u16 max_cmd;
 	struct megasas_cmd *cmd;
-	struct fusion_context *fusion;
 
-	fusion = instance->ctrl_context;
 	max_cmd = instance->max_mfi_cmds;
 
 	/*