scsi: ufs: core: Fix unnecessary operation for early return

Setting bitmap_len is not required when returning early. Defer until it is
needed.
Signed-off-by: ChanWoo Lee <cw9316.lee@samsung.com>
Link: https://lore.kernel.org/r/20221111062301.7423-1-cw9316.lee@samsung.comSigned-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/ufs/core/ufshpb.c

@@ -233,11 +233,6 @@ static bool ufshpb_test_ppn_dirty(struct ufshpb_lu *hpb, int rgn_idx,
 	rgn = hpb->rgn_tbl + rgn_idx;
 	srgn = rgn->srgn_tbl + srgn_idx;
 
-	if (likely(!srgn->is_last))
-		bitmap_len = hpb->entries_per_srgn;
-	else
-		bitmap_len = hpb->last_srgn_entries;
-
 	if (!ufshpb_is_valid_srgn(rgn, srgn))
 		return true;
 
@@ -253,6 +248,11 @@ static bool ufshpb_test_ppn_dirty(struct ufshpb_lu *hpb, int rgn_idx,
 		return true;
 	}
 
+	if (likely(!srgn->is_last))
+		bitmap_len = hpb->entries_per_srgn;
+	else
+		bitmap_len = hpb->last_srgn_entries;
+
 	if ((srgn_offset + cnt) > bitmap_len)
 		bit_len = bitmap_len - srgn_offset;
 	else