scsi: mpi3mr: Fix throttle_groups memory leak

Add a missing kfree().

Fixes: f10af057 ("scsi: mpi3mr: Resource Based Metering")
Signed-off-by: NTomas Henzl <thenzl@redhat.com>
Link: https://lore.kernel.org/r/20230302234336.25456-2-thenzl@redhat.comAcked-by: NSathya Prakash Veerichetty <sathya.prakash@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/mpi3mr/mpi3mr_fw.c

@@ -4389,6 +4389,9 @@ void mpi3mr_free_mem(struct mpi3mr_ioc *mrioc)
 		mrioc->pel_seqnum_virt = NULL;
 	}
 
+	kfree(mrioc->throttle_groups);
+	mrioc->throttle_groups = NULL;
+
 	kfree(mrioc->logdata_buf);
 	mrioc->logdata_buf = NULL;