par_master: Fix propagation of register_par_master() return values

This patch checks return value of register_par_master()
so that in case of an error this error is not ignored anymore.

Tested: builds and ninja test

Change-Id: I377afae41708c7433a56615e2f096bce9c5349f1
Signed-off-by: Anastasia Klimchuk <aklm@chromium.org>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/57192
Original-Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/72234
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/nicintel.c b/nicintel.c
index 50dbfb5..b3f24a3 100644
--- a/nicintel.c
+++ b/nicintel.c
@@ -99,9 +99,7 @@
 	pci_rmmio_writew(0x0001, nicintel_control_bar + CSR_FCR);
 
 	max_rom_decode.parallel = NICINTEL_MEMMAP_SIZE;
-	register_par_master(&par_master_nicintel, BUS_PARALLEL, NULL);
-
-	return 0;
+	return register_par_master(&par_master_nicintel, BUS_PARALLEL, NULL);
 }
 
 static void nicintel_chip_writeb(const struct flashctx *flash, uint8_t val,