tools: PCI: Fix fd leakage

We should close fd before the return of run_test.

Fixes: 3f2ed81 ("tools: PCI: Add a userspace tool to test PCI endpoint")
Signed-off-by: Hewenliang <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Acked-by: Kishon Vijay Abraham I <[email protected]>

Author: hewenliang4

tools/pci/pcitest.c

@@ -129,6 +129,7 @@ static int run_test(struct pci_test *test)
 	}
 
 	fflush(stdout);
+	close(fd);
 	return (ret < 0) ? ret : 1 - ret; /* return 0 if test succeeded */
 }