[media] s5k5baf: Fix potential NULL pointer dereferencing

Dereference 'fw' after the NULL check.

Signed-off-by: Sachin Kamat <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/i2c/s5k5baf.c

···
 static u16 *s5k5baf_fw_get_seq(struct s5k5baf *state, u16 seq_id)
 {
 	struct s5k5baf_fw *fw = state->fw;
-	u16 *data = fw->data + 2 * fw->count;
+	u16 *data;
 	int i;
 
 	if (fw == NULL)
 		return NULL;
+
+	data = fw->data + 2 * fw->count;
 
 	for (i = 0; i < fw->count; ++i) {
 		if (fw->seq[i].id == seq_id)