xen/hvc: Collapse error logic.

All of the error paths are doing the same logic. In which
case we might as well collapse them in one path.

CC: stable@kernel.org
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index d3d91da..afc7fc2 100644 (file)
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -216,22 +216,16 @@ static int xen_hvm_console_init(void)
                return 0;
 
        r = hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN, &v);
-       if (r < 0) {
-               kfree(info);
-               return -ENODEV;
-       }
+       if (r < 0)
+               goto err;
        info->evtchn = v;
        hvm_get_parameter(HVM_PARAM_CONSOLE_PFN, &v);
-       if (r < 0) {
-               kfree(info);
-               return -ENODEV;
-       }
+       if (r < 0)
+               goto err;
        mfn = v;
        info->intf = ioremap(mfn << PAGE_SHIFT, PAGE_SIZE);
-       if (info->intf == NULL) {
-               kfree(info);
-               return -ENODEV;
-       }
+       if (info->intf == NULL)
+               goto err;
        info->vtermno = HVC_COOKIE;
 
        spin_lock(&xencons_lock);
@@ -239,6 +233,9 @@ static int xen_hvm_console_init(void)
        spin_unlock(&xencons_lock);
 
        return 0;
+err:
+       kfree(info);
+       return -ENODEV;
 }
 
 static int xen_pv_console_init(void)