scsi: message: fusion: Remove unused local variable 'port'

Fixes the following W=1 kernel build warning:

drivers/message/fusion/mptctl.c: In function ‘mptctl_gettargetinfo
drivers/message/fusion/mptctl.c:1372:7: warning: variable ‘port’ set but not used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20210408061851.3089-3-thunder.leizhen@huawei.comReported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/message/fusion/mptctl.c

@@ -1367,7 +1367,6 @@ mptctl_gettargetinfo (MPT_ADAPTER *ioc, unsigned long arg)
 	int			lun;
 	int			maxWordsLeft;
 	int			numBytes;
-	u8			port;
 	struct scsi_device 	*sdev;
 
 	if (copy_from_user(&karg, uarg, sizeof(struct mpt_ioctl_targetinfo))) {
@@ -1379,13 +1378,8 @@ mptctl_gettargetinfo (MPT_ADAPTER *ioc, unsigned long arg)
 
 	dctlprintk(ioc, printk(MYIOC_s_DEBUG_FMT "mptctl_gettargetinfo called.\n",
 	    ioc->name));
-	/* Get the port number and set the maximum number of bytes
-	 * in the returned structure.
-	 * Ignore the port setting.
-	 */
 	numBytes = karg.hdr.maxDataSize - sizeof(mpt_ioctl_header);
 	maxWordsLeft = numBytes/sizeof(int);
-	port = karg.hdr.port;
 
 	if (maxWordsLeft <= 0) {
 		printk(MYIOC_s_ERR_FMT "%s@%d::mptctl_gettargetinfo() - no memory available!\n",