intel_edison_fab_c.c: simplify invalid return in mraa_intel_edison_gpio_init_post
intel_edison_fab_c.c: simplify invalid return in mraa_intel_edison_gpio_init_post

Signed-off-by: Brendan Le Foll <3e0e8c4069934e8b47d99704927a85c66c0ceb33@intel.com>

KurtE/mraa,pctj101/mraa,noahchense/mraa,alexandru-elisei/mraa,STANAPO/mraa,Pillar1989/mraa,neuroidss/mraa,alext-mkrs/mraa,allela-roy/mraa,stefan-andritoiu/mraa-gpio-chardev,stefan-andritoiu/mraa-gpio-chardev,g-vidal/mraa,alext-mkrs/mraa,arunlee77/mraa,intel-iot-devkit/mraa,pctj101/mraa,petreeftime/mraa,ncrastanaren/mraa,ProfFan/mraa,petreeftime/mraa,whbruce/mraa,yongli3/mraa,allela-roy/mraa,sundw2014/mraa,tripzero/mraa,noahchense/mraa,smileboywtu/mraa,smileboywtu/mraa,mircea/mraa,jontrulson/mraa,arunlee77/mraa,spitfire88/mraa,ncrastanaren/mraa,yangjae/mraa,w4ilun/mraa,pctj101/mraa,arfoll/mraa,andreivasiliu2211/mraa,w4ilun/mraa,stefan-andritoiu/mraa,jontrulson/mraa,sergev/mraa,allela-roy/mraa,petreeftime/mraa,sundw2014/mraa,yangjae/mraa,neuberfran/mraa,anonymouse64/mraa,Pillar1989/mraa,KurtE/mraa,damcclos/mraa,smileboywtu/mraa,neuberfran/mraa,Kiritoalex/mraa,Hbrinj/mraa,malikabhi05/mraa,yongli3/mraa,malikabhi05/mraa,Hbrinj/mraa,tripzero/mraa,yangjae/mraa,sergev/mraa,intel-iot-devkit/mraa,Jon-ICS/mraa,alext-mkrs/mraa,noahchense/mraa,matt-auld/mraa,ncrastanaren/mraa,timrtoo/Intel,Kiritoalex/mraa,ProfFan/mraa,seem-sky/mraa,stefan-andritoiu/mraa-gpio-chardev,Propanu/mraa,Propanu/mraa,SyrianSpock/mraa,tripzero/mraa,zBMNForks/mraa,zBMNForks/mraa,whbruce/mraa,g-vidal/mraa,Propanu/mraa,alex1818/mraa,g-vidal/mraa,malikabhi05/mraa,yoyojacky/mraa,stefan-andritoiu/mraa,yoyojacky/mraa,nioinnovation/mraa,yongli3/mraa,sundw2014/mraa,zBMNForks/mraa,andreivasiliu2211/mraa,timrtoo/Intel,nioinnovation/mraa,sergev/mraa,andreivasiliu2211/mraa,andreivasiliu2211/mraa,spitfire88/mraa,jontrulson/mraa,alexandru-elisei/mraa,Pillar1989/mraa,Propanu/mraa,alexandru-elisei/mraa,damcclos/mraa,Jon-ICS/mraa,stefan-andritoiu/mraa,intel-iot-devkit/mraa,Meirtz/mraa,KurtE/mraa,neuberfran/mraa,matt-auld/mraa,timrtoo/Intel,petreeftime/mraa,stefan-andritoiu/mraa,alex1818/mraa,w4ilun/mraa,pctj101/mraa,whbruce/mraa,ncrastanaren/mraa,anonymouse64/mraa,yongli3/mraa,whbruce/mraa,nioinnovation/mraa,seem-sky/mraa,noahchense/mraa,timrtoo/Intel,STANAPO/mraa,arunlee77/mraa,spitfire88/mraa,timrtoo/Intel,neuroidss/mraa,neuberfran/mraa,jontrulson/mraa,alexandru-elisei/mraa,mircea/mraa,g-vidal/mraa,mircea/mraa,arfoll/mraa,noahchense/mraa,Hbrinj/mraa,seem-sky/mraa,neuberfran/mraa,intel-iot-devkit/mraa,SyrianSpock/mraa,alexandru-elisei/mraa,alext-mkrs/mraa,Hbrinj/mraa,sergev/mraa,anonymouse64/mraa,seem-sky/mraa,Jon-ICS/mraa,yoyojacky/mraa,sundw2014/mraa,jontrulson/mraa,yongli3/mraa,pctj101/mraa,ncrastanaren/mraa,sergev/mraa,KurtE/mraa,arunlee77/mraa,stefan-andritoiu/mraa,stefan-andritoiu/mraa-gpio-chardev,matt-auld/mraa,malikabhi05/mraa,alex1818/mraa,Meirtz/mraa,seem-sky/mraa,Kiritoalex/mraa,yangjae/mraa,intel-iot-devkit/mraa,neuroidss/mraa,w4ilun/mraa,KurtE/mraa,spitfire88/mraa,sundw2014/mraa,STANAPO/mraa,Propanu/mraa,ProfFan/mraa,arfoll/mraa,arfoll/mraa,arfoll/mraa,damcclos/mraa,SyrianSpock/mraa,Meirtz/mraa,ProfFan/mraa,malikabhi05/mraa,g-vidal/mraa,alext-mkrs/mraa,stefan-andritoiu/mraa-gpio-chardev