[PATCH 4/8] powerpc/nvram: Return directly after a failed parameter validation in dev_nvram_read()

[SF Markus Elfring]

From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 19 Jan 2017 16:12:48 +0100

* Return directly after an inappropriate input parameter was detected.

* Delete an initialisation for the variable "tmp" at the beginning
  which became unnecessary with this refactoring.

Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
 arch/powerpc/kernel/nvram_64.c | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index dc90a0e9ad65..463551589b97 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -745,24 +745,18 @@ static ssize_t dev_nvram_read(struct file *file, char __user *buf,
 			  size_t count, loff_t *ppos)
 {
 	ssize_t ret;
-	char *tmp = NULL;
+	char *tmp;
 	ssize_t size;
 
-	if (!ppc_md.nvram_size) {
-		ret = -ENODEV;
-		goto out;
-	}
+	if (!ppc_md.nvram_size)
+		return -ENODEV;
 
 	size = ppc_md.nvram_size();
-	if (size < 0) {
-		ret = size;
-		goto out;
-	}
+	if (size < 0)
+		return size;
 
-	if (*ppos >= size) {
-		ret = 0;
-		goto out;
-	}
+	if (*ppos >= size)
+		return 0;
 
 	count = min_t(size_t, count, size - *ppos);
 	count = min(count, PAGE_SIZE);
-- 
2.11.0