scsi: message: fusion: Remove unused variable retval

The following warning showed up when compiling with W=1.

drivers/message/fusion/mptctl.c: In function ‘mptctl_hp_hostinfo’:
drivers/message/fusion/mptctl.c:2337:8: warning: variable ‘retval’ set but not used [-Wunused-but-set-variable]
  int   retval;

Fixing by removing the variable.

Link: https://lore.kernel.org/r/20220317030325.30526-1-alexander.vorwerk@stud.uni-goettingen.deSigned-off-by: Alexander Vorwerk <alexander.vorwerk@stud.uni-goettingen.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/message/fusion/mptctl.c

@@ -2334,7 +2334,6 @@ mptctl_hp_hostinfo(MPT_ADAPTER *ioc, unsigned long arg, unsigned int data_size)
 	ToolboxIstwiReadWriteRequest_t	*IstwiRWRequest;
 	MPT_FRAME_HDR		*mf = NULL;
 	unsigned long		timeleft;
-	int			retval;
 	u32			msgcontext;
 
 	/* Reset long to int. Should affect IA64 and SPARC only
@@ -2488,7 +2487,6 @@ mptctl_hp_hostinfo(MPT_ADAPTER *ioc, unsigned long arg, unsigned int data_size)
 	ioc->add_sge((char *)&IstwiRWRequest->SGL,
 	    (MPT_SGE_FLAGS_SSIMPLE_READ|4), buf_dma);
 
-	retval = 0;
 	SET_MGMT_MSG_CONTEXT(ioc->ioctl_cmds.msg_context,
 				IstwiRWRequest->MsgContext);
 	INITIALIZE_MGMT_STATUS(ioc->ioctl_cmds.status)
@@ -2498,7 +2496,6 @@ mptctl_hp_hostinfo(MPT_ADAPTER *ioc, unsigned long arg, unsigned int data_size)
 	timeleft = wait_for_completion_timeout(&ioc->ioctl_cmds.done,
 			HZ*MPT_IOCTL_DEFAULT_TIMEOUT);
 	if (!(ioc->ioctl_cmds.status & MPT_MGMT_STATUS_COMMAND_GOOD)) {
-		retval = -ETIME;
 		printk(MYIOC_s_WARN_FMT "%s: failed\n", ioc->name, __func__);
 		if (ioc->ioctl_cmds.status & MPT_MGMT_STATUS_DID_IOCRESET) {
 			mpt_free_msg_frame(ioc, mf);