powerpc/crash: remove unnecessary NULL check before kvfree()

JIRA: https://issues.redhat.com/browse/RHEL-101851

commit 9803af2
Author: Sourabh Jain <sourabhjain@linux.ibm.com>
Date:   Thu May 2 23:50:40 2024 +0530

    powerpc/crash: remove unnecessary NULL check before kvfree()

    Fix the following coccicheck build warning:

    arch/powerpc/kexec/crash.c:488:2-8: WARNING: NULL check before some
    freeing functions is not needed.

    Reported-by: kernel test robot <lkp@intel.com>
    Closes: https://lore.kernel.org/oe-kbuild-all/202404261048.skfV5DDB-lkp@intel.com/
    Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
    Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
    Link: https://msgid.link/20240502182040.774759-1-sourabhjain@linux.ibm.com

Signed-off-by: Mamatha Inamdar <minamdar@redhat.com>

Author: Mamatha Inamdar

arch/powerpc/kexec/crash.c

@@ -468,8 +468,7 @@ static void update_crash_elfcorehdr(struct kimage *image, struct memory_notify *
 	}
 out:
 	kvfree(cmem);
-	if (elfbuf)
-		kvfree(elfbuf);
+	kvfree(elfbuf);
 }
 
 /**