net/sfc: remove null dereference in log

[ upstream commit d05ce802f39dd4a67c18f9dbe1a00901429ba191 ]

When ctx->sa is null, sfc_err(ctx->sa, ...) will trigger a null
dereference in the macro of sfc_err. Use SFC_GENERIC_LOG(ERR, ...)
to avoid that.

Fixes: 44db08d ("net/sfc: maintain controller to EFX interface mapping")

Signed-off-by: Weiguo Li <liweiguo@xencore.cn>
Reviewed-by: Ferruh Yigit <ferruh.yigit@amd.com>

drivers/net/sfc/sfc_ethdev.c

@@ -2053,7 +2053,7 @@ sfc_process_mport_journal_cb(void *data, efx_mport_desc_t *mport,
 	struct sfc_mport_journal_ctx *ctx = data;
 
 	if (ctx == NULL || ctx->sa == NULL) {
-		sfc_err(ctx->sa, "received NULL context or SFC adapter");
+		SFC_GENERIC_LOG(ERR, "received NULL context or SFC adapter");
 		return EINVAL;
 	}