wifi: iwlwifi: uninitialized variable in iwl_acpi_get_ppag_table()

This is an error path and Smatch complains that "tbl_rev" is uninitialized
on this path.  All the other functions follow this same patter where they
set the error code and goto out_free so that's probably what was intended
here as well.

Fixes: e8e10a3 ("iwlwifi: acpi: move ppag code from mvm to fw/acpi")
Signed-off-by: Dan Carpenter <[email protected]>
Link: https://msgid.link/[email protected]
Signed-off-by: Johannes Berg <[email protected]>

Author: Dan Carpenter

drivers/net/wireless/intel/iwlwifi/fw/acpi.c

@@ -1116,6 +1116,9 @@ int iwl_acpi_get_ppag_table(struct iwl_fw_runtime *fwrt)
 		goto read_table;
 	}
 
+	ret = PTR_ERR(wifi_pkg);
+	goto out_free;
+
 read_table:
 	fwrt->ppag_ver = tbl_rev;
 	flags = &wifi_pkg->package.elements[1];