isl_tab_track_bmap: fix memory leak on error path
isl_tab_track_bmap: fix memory leak on error path

Signed-off-by: Sven Verdoolaege <e5350bbed4977f5eb8ae1dc6abd9ae59d21ace75@kotnet.org>

Distrotech/isl,simbuerg/isl,BenzoSM/isl,nicolasvasilache/isl,nicolasvasilache/isl,Distrotech/isl,simbuerg/isl,SaberMod/isl-current,jleben/isl,cfx-next/toolchain_isl-upstream,Meinersbur/isl,inducer/isl-mirror,Distrotech/isl,VanirLLVM/toolchain_isl,crossbuild/isl,Distrotech/isl,BobSaget-Mod/libisl,nicolasvasilache/isl,jleben/isl,BenzoSM/isl,simbuerg/isl,BobSaget-Mod/libisl,crossbuild/isl,epowers/isl,PollyLabs/isl,epowers/isl,evaautomation/isl,PollyLabs/isl,crossbuild/isl,KangDroidSMProject/ISL,BenzoSM/isl,UBERTC/isl,pierrotdelalune/isl,SaberMod/isl-current,epowers/isl,Meinersbur/isl,Meinersbur/isl,simbuerg/isl,KangDroidSMProject/ISL,inducer/isl-mirror,evaautomation/isl,VanirLLVM/toolchain_isl,UBERTC/isl,PollyLabs/isl,simbuerg/isl,pierrotdelalune/isl,evaautomation/isl,epowers/isl,nicolasvasilache/isl,KangDroidSMProject/ISL,tobig/isl,Meinersbur/isl,abduld/isl,BenzoSM/isl,evaautomation/isl,jleben/isl,epowers/isl,VanirLLVM/toolchain_isl,abduld/isl,VanirLLVM/toolchain_isl,nicolasvasilache/isl,pierrotdelalune/isl,abduld/isl,KangDroidSMProject/ISL,UBERTC/isl,pierrotdelalune/isl,Distrotech/isl,KangDroidSMProject/ISL,PollyLabs/isl,SaberMod/isl-current,cfx-next/toolchain_isl-upstream,serge-sans-paille/isl,VanirLLVM/toolchain_isl,jleben/isl,inducer/isl-mirror,tobig/isl,SaberMod/isl-current,inducer/isl-mirror,serge-sans-paille/isl,PollyLabs/isl,cfx-next/toolchain_isl-upstream,inducer/isl-mirror,serge-sans-paille/isl,tobig/isl,serge-sans-paille/isl,abduld/isl,pierrotdelalune/isl,serge-sans-paille/isl,UBERTC/isl,jleben/isl,BenzoSM/isl,cfx-next/toolchain_isl-upstream,cfx-next/toolchain_isl-upstream,tobig/isl,BobSaget-Mod/libisl,BobSaget-Mod/libisl,BobSaget-Mod/libisl,crossbuild/isl