powerpc/kexec: Use common error handling code in setup_new_fdt()

Add a jump target so that a bit of exception handling can be better
reused at the end of this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/machine_kexec_file_64.c b/arch/powerpc/kernel/machine_kexec_file_64.c
index 0bd23dc..c77e95e 100644 (file)
--- a/arch/powerpc/kernel/machine_kexec_file_64.c
+++ b/arch/powerpc/kernel/machine_kexec_file_64.c
@@ -269,18 +269,14 @@ int setup_new_fdt(const struct kimage *image, void *fdt,
                ret = fdt_setprop_u64(fdt, chosen_node,
                                      "linux,initrd-start",
                                      initrd_load_addr);
-               if (ret < 0) {
-                       pr_err("Error setting up the new device tree.\n");
-                       return -EINVAL;
-               }
+               if (ret < 0)
+                       goto err;
 
                /* initrd-end is the first address after the initrd image. */
                ret = fdt_setprop_u64(fdt, chosen_node, "linux,initrd-end",
                                      initrd_load_addr + initrd_len);
-               if (ret < 0) {
-                       pr_err("Error setting up the new device tree.\n");
-                       return -EINVAL;
-               }
+               if (ret < 0)
+                       goto err;
 
                ret = fdt_add_mem_rsv(fdt, initrd_load_addr, initrd_len);
                if (ret) {
@@ -292,10 +288,8 @@ int setup_new_fdt(const struct kimage *image, void *fdt,
 
        if (cmdline != NULL) {
                ret = fdt_setprop_string(fdt, chosen_node, "bootargs", cmdline);
-               if (ret < 0) {
-                       pr_err("Error setting up the new device tree.\n");
-                       return -EINVAL;
-               }
+               if (ret < 0)
+                       goto err;
        } else {
                ret = fdt_delprop(fdt, chosen_node, "bootargs");
                if (ret && ret != -FDT_ERR_NOTFOUND) {
@@ -311,10 +305,12 @@ int setup_new_fdt(const struct kimage *image, void *fdt,
        }
 
        ret = fdt_setprop(fdt, chosen_node, "linux,booted-from-kexec", NULL, 0);
-       if (ret) {
-               pr_err("Error setting up the new device tree.\n");
-               return -EINVAL;
-       }
+       if (ret)
+               goto err;
 
        return 0;
+
+err:
+       pr_err("Error setting up the new device tree.\n");
+       return -EINVAL;
 }