ath10k: refactor ath10k_pci_dump_memory() in preparation for QCA9984 support

As QCA9984 needs two region types refactor the code to make it easier add the
new types. No functional changes.
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/ath10k/pci.c

@@ -1584,6 +1584,36 @@ static int ath10k_pci_set_ram_config(struct ath10k *ar, u32 config)
 	return 0;
 }
 
+/* if an error happened returns < 0, otherwise the length */
+static int ath10k_pci_dump_memory_generic(struct ath10k *ar,
+					  const struct ath10k_mem_region *current_region,
+					  u8 *buf)
+{
+	int ret;
+
+	if (current_region->section_table.size > 0)
+		/* Copy each section individually. */
+		return ath10k_pci_dump_memory_section(ar,
+						      current_region,
+						      buf,
+						      current_region->len);
+
+	/* No individiual memory sections defined so we can
+	 * copy the entire memory region.
+	 */
+	ret = ath10k_pci_diag_read_mem(ar,
+				       current_region->start,
+				       buf,
+				       current_region->len);
+	if (ret) {
+		ath10k_warn(ar, "failed to copy ramdump region %s: %d\n",
+			    current_region->name, ret);
+		return ret;
+	}
+
+	return current_region->len;
+}
+
 static void ath10k_pci_dump_memory(struct ath10k *ar,
 				   struct ath10k_fw_crash_data *crash_data)
 {
@@ -1642,27 +1672,14 @@ static void ath10k_pci_dump_memory(struct ath10k *ar,
 		buf += sizeof(*hdr);
 		buf_len -= sizeof(*hdr);
 
-		if (current_region->section_table.size > 0) {
-			/* Copy each section individually. */
-			count = ath10k_pci_dump_memory_section(ar,
-							       current_region,
-							       buf,
-							       current_region->len);
-		} else {
-			/* No individiual memory sections defined so we can
-			 * copy the entire memory region.
-			 */
-			ret = ath10k_pci_diag_read_mem(ar,
-						       current_region->start,
-						       buf,
-						       current_region->len);
-			if (ret) {
-				ath10k_warn(ar, "failed to copy ramdump region %s: %d\n",
-					    current_region->name, ret);
+		switch (current_region->type) {
+		default:
+			ret = ath10k_pci_dump_memory_generic(ar, current_region, buf);
+			if (ret < 0)
 				break;
-			}
 
-			count = current_region->len;
+			count = ret;
+			break;
 		}
 
 		hdr->region_type = cpu_to_le32(current_region->type);