scsi: ufs: ufshpb: Fix possible memory leak

When HPB pinned region exists and mctx allocation for this region fails, a
memory leak is possible because memory is not released for the subregion
table of the current region.

Free memory for the subregion table of the current region.

Link: https://lore.kernel.org/r/1891546521.01629711601304.JavaMail.epsvc@epcpadp3Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Keoseong Park <keosung.park@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ufshpb.c

@@ -1904,8 +1904,6 @@ static int ufshpb_alloc_region_tbl(struct ufs_hba *hba, struct ufshpb_lu *hpb)
 	if (!rgn_table)
 		return -ENOMEM;
 
-	hpb->rgn_tbl = rgn_table;
-
 	for (rgn_idx = 0; rgn_idx < hpb->rgns_per_lu; rgn_idx++) {
 		int srgn_cnt = hpb->srgns_per_rgn;
 		bool last_srgn = false;
@@ -1942,10 +1940,12 @@ static int ufshpb_alloc_region_tbl(struct ufs_hba *hba, struct ufshpb_lu *hpb)
 		rgn->hpb = hpb;
 	}
 
+	hpb->rgn_tbl = rgn_table;
+
 	return 0;
 
 release_srgn_table:
-	for (i = 0; i < rgn_idx; i++)
+	for (i = 0; i <= rgn_idx; i++)
 		kvfree(rgn_table[i].srgn_tbl);
 
 	kvfree(rgn_table);