Kernel: Shutdown when module load fails.

This prevents us from trying to reinit next time, which can crash since we
never finished initing in the first place.

Core/HLE/sceKernelModule.cpp

@@ -1626,6 +1626,7 @@ bool __KernelLoadExec(const char *filename, u32 paramPtr, std::string *error_str
 			if (param_argp) delete[] param_argp;
 			if (param_key) delete[] param_key;
 		}
+		__KernelShutdown();
 		return false;
 	}