bnxt_en: Flush FW trace before copying to the coredump

bnxt_fill_drv_seg_record() calls bnxt_dbg_hwrm_log_buffer_flush()
to flush the FW trace buffer.  This needs to be done before we
call bnxt_copy_ctx_mem() to copy the trace data.

Without this fix, the coredump may not contain all the FW
traces.

Fixes: 3c2179e ("bnxt_en: Add FW trace coredump segments to the coredump")
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Shruti Parab <shruti.parab@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250710213938.1959625-3-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: Shruti Parab

drivers/net/ethernet/broadcom/bnxt/bnxt_coredump.c

@@ -368,23 +368,27 @@ static u32 bnxt_get_ctx_coredump(struct bnxt *bp, void *buf, u32 offset,
 		if (!ctxm->mem_valid || !seg_id)
 			continue;
 
-		if (trace)
+		if (trace) {
 			extra_hlen = BNXT_SEG_RCD_LEN;
+			if (buf) {
+				u16 trace_type = bnxt_bstore_to_trace[type];
+
+				bnxt_fill_drv_seg_record(bp, &record, ctxm,
+							 trace_type);
+			}
+		}
+
 		if (buf)
 			data = buf + BNXT_SEG_HDR_LEN + extra_hlen;
+
 		seg_len = bnxt_copy_ctx_mem(bp, ctxm, data, 0) + extra_hlen;
 		if (buf) {
 			bnxt_fill_coredump_seg_hdr(bp, &seg_hdr, NULL, seg_len,
 						   0, 0, 0, comp_id, seg_id);
 			memcpy(buf, &seg_hdr, BNXT_SEG_HDR_LEN);
 			buf += BNXT_SEG_HDR_LEN;
-			if (trace) {
-				u16 trace_type = bnxt_bstore_to_trace[type];
-
-				bnxt_fill_drv_seg_record(bp, &record, ctxm,
-							 trace_type);
+			if (trace)
 				memcpy(buf, &record, BNXT_SEG_RCD_LEN);
-			}
 			buf += seg_len;
 		}
 		len += BNXT_SEG_HDR_LEN + seg_len;