[SCSI] megaraid_sas: Fix tasklet_init call

The following patch fixes an incorrect tasklet_init() call in
megasas_init_fw() to use instancet->tasklet.
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/megaraid/megaraid_sas_base.c

@@ -3544,7 +3544,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
 	* Setup tasklet for cmd completion
 	*/
 
-	tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
+	tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
 		(unsigned long)instance);
 
 	/* Initialize the cmd completion timer */