alsa-utils: add error handling to for loop

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/alsa-utils/alsa-utils.mk

@@ -46,7 +46,7 @@ ALSA_UTILS_TARGETS_$(BR2_PACKAGE_ALSA_UTILS_SPEAKER_TEST) += usr/bin/speaker-tes
 define ALSA_UTILS_INSTALL_TARGET_CMDS
 	mkdir -p $(TARGET_DIR)/var/lib/alsa
 	for i in $(ALSA_UTILS_TARGETS_y); do \
-		$(INSTALL) -D -m 755 $(STAGING_DIR)/$$i $(TARGET_DIR)/$$i; \
+		$(INSTALL) -D -m 755 $(STAGING_DIR)/$$i $(TARGET_DIR)/$$i || exit 1; \
 	done
 	if [ -x "$(TARGET_DIR)/usr/bin/speaker-test" ]; then \
 		mkdir -p $(TARGET_DIR)/usr/share/alsa/speaker-test; \